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Ok, here it is in it's horrible cut up glory!

There is a seam on the bottom and that is what I tried to cut first; however, as it turns out, that seam runs nearly the full height of the lock body, so that was a nogo and I cut out around the keyway, which turned out to be where I needed to cut. A small hole saw would have been MUCH better, but alas, it was already getting ugly.

The logo on the side of the body


The chewed up bottom


The "cylinder" pieces

The barrel piece is what determines how much twist is required on a given key. This is a later version of the lock that would have side milling on the key as evidenced by the bump on it. Keys with the side milling will work on older padlocks with the same twist, but not vise versa. The "cup" piece as you can see here has a little cam on the bottom to move the locking dog when the key has depressed the center button.

The "cup"

Notice the dent, that is what engages the key to turn, so that the cam can move the locking dog.

Looking inside of the barrel with the "cylinder" removed.

The button in the center must be depressed for the locking dog to slide over by the action of the cam on the bottom of the cup.

All in all, maybe not the most secure lock ever made, but quite neat and an ingenious design.

-Elbow

Very cool.

That's neat, I wondered how those worked. Thanks for the pics. That thing really looks like it was a bear to get open.

great job very interesting lock

Interesting lock, thanks for the break down & pics elbow